Lossless equalization principle a two-way
Two-way non-destructive principle of a balanced vgp-bps2 , vgp-bps2a charge and discharge the program structure as shown in Figure 1, each cell balancing FET shunt circuit are two Q, two diodes D, and an energy storage device composed of inductor L. (B) is a picture out of three when the circuit connecting the battery to link the case. In order to charge, for example, assume that an equilibrium in the two cell voltage circuit that there is no balance, such as VB1> VB2, then the Q11 conduction, the battery B1 to the charge inductor L1, when the Q11 deadline, L1 in order to freewheeling, and B2, D12 constitute a circuit, the vgp-bps2b , vgp-bps2c energy stored in the inductor transferred to B2, the realization of the energy transfer from B1 to B2.
By the same token when the VB1 < VB2, then through the Q12-off to achieve the energy transfer from B2 to B1, that is, the circuit is a two-way transfer of energy balance device. Although the energy transfer only between adjacent canon bg-e6 battery gri cells, due to the trend of energy transfer is always from the high-voltage battery to pass to the low battery voltage, and thus ultimately the balance of the whole group of batteries. Discharge, principles and canon eos 20d battery grip charging basically the same.
Since all the equilibrium structure of the circuit are the same, so easy to achieve a modular design.
